Circadian rhythms regulate amelogenesis.

Circadian rhythms regulate amelogenesis.
复制标题

DOI:
10.1016/j.bone.2013.02.011
复制
发表时间:
2013-07
期刊:
影响因子:
4.1
通讯作者:
Papagerakis, Petros
Papagerakis, Petros
中科院分区:
医学2区
文献类型:
--
作者:
Zheng, Li;Seon, Yoon Ji;Mourao, Marcio A.;Schnell, Santiago;Kim, Doohak;Harada, Hidemitsu;Papagerakis, Silvana;Papagerakis, Petros

文献摘要

参考文献

被引文献

相似文献

成釉细胞是负责制造釉质的细胞,根据同步成釉细胞分化和釉质形成所必需的特殊功能,改变其形态特征。分泌和成熟的成釉细胞的特点是表达阶段特定的基因,遵循严格控制的重复模式。昼夜节律被认为是包括骨骼在内的许多组织发育和疾病的关键调节因素。我们的目的是对时钟基因在釉质形成中的作用获得新的见解,并探索昼夜节律和釉质形成之间的潜在联系。我们的数据显示,明确的证据表明,主要的时钟基因(BMal1,Clock,PER1和PER2)在成釉细胞中以规则的昼夜节律(24小时)在RNA和蛋白质水平上振荡。本研究还发现,成釉细胞分化的两个标志物,即成釉细胞分泌性标志物Amelgenin和成釉细胞成熟标志物激肽释放酶相关肽酶4(Klk4)是Clock基因的下游靶标。在HAT-7成釉细胞中,Amelx和Klk4都表现出24小时的振荡表达模式,并且它们的表达水平在BMal1过表达后上调。综上所述,这些数据表明,成釉过程的分泌期和成熟期都可能受到昼夜节律的控制。Clock基因表达模式的改变可能导致牙釉质对位和矿化的显着变化。
Ameloblasts, the cells responsible for making enamel, modify their morphological features in response to specialized functions necessary for synchronized ameloblast differentiation and enamel formation. Secretory and maturation ameloblasts are characterized by the expression of stage-specific genes which follows strictly controlled repetitive patterns. Circadian rhythms are recognized as key regulators of development and diseases of many tissues including bone. Our aim was to gain novel insights on the role of clock genes in enamel formation and to explore the potential links between circadian rhythms and amelogenesis. Our data shows definitive evidence that the main clock genes (Bmal1, Clock, Per1 and Per2) oscillate in ameloblasts at regular circadian (24h) intervals both at RNA and protein levels. This study also reveals that two markers of ameloblast differentiation i.e. amelogenin (Amelx; a marker of secretory ameloblasts) and kallikrein-related peptidase 4 (Klk4, a marker of maturation ameloblasts) are downstream targets of clock genes. Both, Amelx and Klk4 show 24h oscillatory expression patterns and their expression levels are up-regulated after Bmal1 over-expression in HAT-7 ameloblast cells. Taken together, these data suggest that both the secretory and the maturation stage of amelogenesis might be under circadian control. Changes in clock genes expression patterns might result in significant alterations of enamel apposition and mineralization.
DOI: 10.1101/gad.1099503
发表时间: 2003-08-01
影响因子: 10.5
作者:
Kondratov, RV;Chernov, MV;Antoch, MP
通讯作者: Antoch, MP
DOI: 10.1038/ncb1775
发表时间: 2008-10-01
影响因子: 21.3
作者:
Ukai-Tadenuma, Maki;Kasukawa, Takeya;Ueda, Hiroki R.
通讯作者: Ueda, Hiroki R.
DOI: 10.1074/jbc.m109.013623
发表时间: 2009-07-10
影响因子: 4.8
作者:
Simmer, James P.;Hu, Yuanyuan;Hu, Jan C. -C.
通讯作者: Hu, Jan C. -C.
DOI: 10.1128/mcb.00337-06
发表时间: 2006-10-01
影响因子: 5.3
作者:
Kwon, Ilmin;Lee, Jiwon;Lee, Kun Ho
通讯作者: Lee, Kun Ho
DOI: 10.1073/pnas.0503108102
发表时间: 2005-10-04
影响因子: 11.1
作者:
Guatelli-Steinberg, D;Reid, DJ;Larsen, CS
通讯作者: Larsen, CS